EP 0083526 B1 19851113 - PROCESS FOR FORMING A BLOCK OF MACROMOLECULAR, PIEZOELECTRIC MATERIAL, AND BLOCK FORMED IN ACCORDANCE WITH THE PROCESS
Title (en)
PROCESS FOR FORMING A BLOCK OF MACROMOLECULAR, PIEZOELECTRIC MATERIAL, AND BLOCK FORMED IN ACCORDANCE WITH THE PROCESS
Publication
Application
Priority
FR 8124560 A 19811231
Abstract (en)
[origin: US4500377A] The invention relates to the production of blocks of macromolecular material displaying piezoelectric and pyroelectric properties and provides a production process consisting in drawing a thin strip of a film of macromolecular material from a feed reel, electrically polarizing the said film and coating it with adhesive by means of a solution based on a polymeric binder before the forming on a mandrel of a roll of which the turns form, after drying, a monolithic structure which may be split into blocks. The invention finds particular use in the production of electromechanical transducers for applications connected with electroacoustics and underwater acoustics.
IPC 1-7
IPC 8 full level
H10N 30/098 (2023.01); H10N 30/50 (2023.01)
CPC (source: EP US)
H10N 30/045 (2023.02 - EP US); H10N 30/05 (2023.02 - EP US); H10N 30/088 (2023.02 - EP US); H10N 30/098 (2023.02 - EP US); Y10S 84/24 (2013.01 - EP US); Y10T 156/1052 (2015.01 - EP US)
Designated contracting state (EPC)
DE GB IT NL
DOCDB simple family (publication)
EP 0083526 A2 19830713; EP 0083526 A3 19830810; EP 0083526 B1 19851113; DE 3267469 D1 19851219; FR 2519293 A1 19830708; FR 2519293 B1 19840406; JP S58122790 A 19830721; US 4500377 A 19850219
DOCDB simple family (application)
EP 82402342 A 19821221; DE 3267469 T 19821221; FR 8124560 A 19811231; JP 23496882 A 19821228; US 42429282 A 19820927